/* =========================================================
   SONNHY 公式サイト 見た目のファイル
   色3つ・文字の大きさ3つ・動き3つ（ふわっと出る／ボタンに触れた時／ヘッダー）
   ========================================================= */

/* ---------- ここから：色・文字・余白の決まり ---------- */
:root {
  --ink: #16151A;      /* ベース（夜の墨） */
  --paper: #EEE9E0;    /* 文字（オフホワイト） */
  --amber: #E3A23B;    /* 差し色（朝日の琥珀） */
  --paper-dim: rgba(238, 233, 224, 0.72);
  --line: rgba(238, 233, 224, 0.16);

  --font-head: "Shippori Mincho", "Hiragino Mincho ProN", "Yu Mincho", serif;
  --font-body: "Noto Sans JP", "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Yu Gothic", sans-serif;

  /* 文字の大きさは3種類だけ */
  --fs-l: clamp(1.75rem, 1.1rem + 2.6vw, 3rem);
  --fs-m: clamp(1.25rem, 1.05rem + 0.8vw, 1.625rem);
  --fs-s: 1rem;

  --space-section: 128px;
  --side: 48px;
  --max: 1152px;

  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

@media (max-width: 767px) {
  :root {
    --space-section: 80px;
    --side: 24px;
  }
}

/* ---------- ここから：土台 ---------- */
*, *::before, *::after { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

body {
  margin: 0;
  background: var(--ink);
  color: var(--paper);
  font-family: var(--font-body);
  font-size: var(--fs-s);
  font-weight: 400;
  line-height: 1.9;
  overflow-x: hidden;
  word-break: auto-phrase; /* 日本語を文節で折り返す（対応していないブラウザは普通に折り返す） */
}

/* パソコン幅だけの改行（スマホでは文節で自然に折り返す） */
@media (max-width: 767px) {
  br.pc-only { display: none; }
}

img { display: block; max-width: 100%; height: auto; }
figure { margin: 0; }
p { margin: 0; }
ul, ol { margin: 0; padding: 0; list-style: none; }

a { color: inherit; }
a:focus-visible, button:focus-visible {
  outline: 2px solid var(--amber);
  outline-offset: 4px;
}

h1, h2, h3 {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: 0.04em;
  font-feature-settings: "palt";
}

.num { font-feature-settings: "tnum"; }

.visually-hidden {
  position: absolute !important;
  width: 1px; height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

.skip {
  position: absolute;
  left: 16px; top: -64px;
  z-index: 100;
  padding: 8px 16px;
  background: var(--amber);
  color: var(--ink);
}
.skip:focus { top: 16px; }

/* ---------- ここから：ボタン（動き2：触れた時に少し浮く） ---------- */
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 56px;
  padding: 16px 32px;
  border-radius: 999px;
  background: var(--amber);
  color: var(--ink);
  font-weight: 500;
  font-size: var(--fs-s);
  line-height: 1.4;
  text-decoration: none;
  letter-spacing: 0.04em;
  transition: transform 0.4s var(--ease), background-color 0.4s var(--ease);
}
.button:hover { transform: translateY(-2px); background-color: #EAB45A; }

.button--dark { background: var(--ink); color: var(--paper); }
.button--dark:hover { background-color: #2A2830; }

/* ---------- ここから：ヘッダー（動き3：下へ進むと縮んで背景が付く） ---------- */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 50;
  transition: background-color 0.4s var(--ease);
}
.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: var(--max);
  margin: 0 auto;
  padding: 24px var(--side);
  transition: padding 0.4s var(--ease);
}
.site-header__logo { display: block; width: 64px; transition: width 0.4s var(--ease); }
.site-header.is-scrolled { background-color: rgba(22, 21, 26, 0.94); }
.site-header.is-scrolled .site-header__inner { padding-top: 8px; padding-bottom: 8px; }
.site-header.is-scrolled .site-header__logo { width: 48px; }

.site-nav ul { display: flex; gap: 32px; }
.site-nav a {
  display: inline-block;
  padding: 8px 0;
  text-decoration: none;
  letter-spacing: 0.06em;
  border-bottom: 1px solid transparent;
  transition: border-color 0.4s var(--ease), color 0.4s var(--ease);
}
.site-nav a:hover { color: var(--amber); border-bottom-color: var(--amber); }

.menu-button { display: none; }

@media (max-width: 767px) {
  .site-header__logo { width: 56px; }

  .menu-button {
    position: relative;
    z-index: 2;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    min-width: 48px;
    min-height: 48px;
    padding: 0 8px;
    border: 0;
    background: transparent;
    color: var(--paper);
    font: inherit;
    cursor: pointer;
  }
  .menu-button__bar,
  .menu-button__bar::before,
  .menu-button__bar::after {
    display: block;
    width: 24px;
    height: 1px;
    background: currentColor;
    transition: transform 0.4s var(--ease), background-color 0.4s var(--ease);
  }
  .menu-button__bar { position: relative; }
  .menu-button__bar::before,
  .menu-button__bar::after { content: ""; position: absolute; left: 0; }
  .menu-button__bar::before { top: -7px; }
  .menu-button__bar::after { top: 7px; }
  .menu-button[aria-expanded="true"] .menu-button__bar { background: transparent; }
  .menu-button[aria-expanded="true"] .menu-button__bar::before { transform: translateY(7px) rotate(45deg); }
  .menu-button[aria-expanded="true"] .menu-button__bar::after { transform: translateY(-7px) rotate(-45deg); }

  .site-nav {
    position: fixed;
    inset: 0;
    z-index: 1;
    display: flex;
    align-items: center;
    padding: 0 var(--side);
    background: var(--ink);
    visibility: hidden;
    opacity: 0;
    transition: opacity 0.4s var(--ease), visibility 0.4s;
  }
  .site-nav.is-open { visibility: visible; opacity: 1; }
  .site-nav ul { flex-direction: column; gap: 8px; }
  .site-nav a {
    font-family: var(--font-head);
    font-size: var(--fs-m);
    padding: 8px 0;
  }
  /* JSが動かない時は、メニューを開いた状態で並べる */
  html:not(.js) .site-nav { position: static; visibility: visible; opacity: 1; background: none; padding: 0; }
  html:not(.js) .site-nav ul { flex-direction: row; gap: 16px; }
  html:not(.js) .site-nav a { font-size: var(--fs-s); }
}

body.menu-open { overflow: hidden; }

/* ---------- ここから：一番上 ---------- */
.hero {
  position: relative;
  min-height: 100vh;
  min-height: 100svh;
  display: flex;
  align-items: center;
  overflow: hidden;
}
.hero__photo {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: 60% center;
}
/* 写真の明るい所でも文字が読めるよう、左側に夜の色を薄く重ねる */
.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(22, 21, 26, 0.72) 0%, rgba(22, 21, 26, 0.32) 48%, rgba(22, 21, 26, 0) 70%);
}
.hero__inner {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: var(--max);
  margin: 0 auto;
  padding: 128px var(--side) 96px;
}
.hero__name {
  margin-bottom: 24px;
  font-family: var(--font-head);
  font-size: var(--fs-s);
  font-weight: 500;
  letter-spacing: 0.08em;
  color: var(--amber);
}
.hero__title { font-size: var(--fs-l); line-height: 1.4; }
.hero__lead {
  margin-top: 24px;
  font-family: var(--font-head);
  font-size: var(--fs-m);
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--amber);
}
.hero__action { margin-top: 48px; }
.hero__news {
  margin-top: 32px;
  color: var(--paper-dim);
  line-height: 1.8;
}

@media (max-width: 767px) {
  .hero { align-items: flex-end; }
  .hero__photo { object-position: 78% center; }
  .hero::after {
    background: linear-gradient(180deg, rgba(22, 21, 26, 0.2) 0%, rgba(22, 21, 26, 0.55) 40%, rgba(22, 21, 26, 0.92) 78%);
  }
  .hero__inner { padding-bottom: 64px; }
  .hero__action { margin-top: 32px; }
}

/* ---------- ここから：余白だけの一文 ---------- */
.pause {
  padding: var(--space-section) var(--side);
  max-width: var(--max);
  margin: 0 auto;
}
.pause__text {
  font-family: var(--font-head);
  font-size: var(--fs-m);
  font-weight: 500;
  line-height: 1.8;
  letter-spacing: 0.04em;
  font-feature-settings: "palt";
}

/* ---------- ここから：年表（一番記憶に残る場所） ---------- */
.songs {
  padding: 0 var(--side) var(--space-section);
}
.timeline {
  position: relative;
  max-width: var(--max);
  margin: 0 auto;
  display: grid;
  gap: 96px;
}
/* 年表をつなぐ縦の線（最後は薄れて終わる＝続きがある） */
.timeline::before {
  content: "";
  position: absolute;
  top: 0; bottom: 0;
  left: 50%;
  width: 1px;
  background: linear-gradient(180deg, var(--amber) 0%, var(--amber) 80%, rgba(227, 162, 59, 0) 100%);
  opacity: 0.5;
}

.track {
  position: relative;
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  column-gap: 96px;
}
/* 線の上の点（配信日の位置） */
.track::before {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  width: 9px; height: 9px;
  margin: -4px 0 0 -4px;
  border-radius: 999px;
  background: var(--amber);
}
.track.is-upcoming::before,
.track.is-next::before {
  background: var(--ink);
  box-shadow: inset 0 0 0 1px var(--amber);
}

.track__jacket { width: 100%; justify-self: end; }
.track__jacket img { width: 100%; }

/* 大きさで「今これ」と「増えていく途中」を分ける */
.track--released .track__jacket { max-width: 400px; }
.track--small .track__jacket { max-width: 320px; }

/* 説明文は左寄せにそろえ、塊ごと線の側へ寄せる */
.track__body {
  text-align: left;
  max-width: calc(var(--fs-m) * 22);
}

/* 偶数番目は左右を入れ替える */
.track:nth-child(odd) .track__body { justify-self: start; }
.track:nth-child(even) .track__jacket { order: 2; justify-self: start; }
.track:nth-child(even) .track__body { order: 1; justify-self: end; }

/* 最新曲（FUEL）：1列で大きく */
.track.track--latest {
  grid-template-columns: 640px 1fr;
  column-gap: 64px;
  align-items: end;
}
.track--latest::before { display: none; }
.track.track--latest .track__jacket {
  order: 0;
  position: relative;
  z-index: 1;
  max-width: 640px;
  justify-self: stretch;
}
.track.track--latest .track__body { order: 1; justify-self: start; max-width: 40em; }

.track__date {
  color: var(--amber);
  letter-spacing: 0.08em;
  font-weight: 500;
}
.track__title {
  margin-top: 8px;
  font-size: var(--fs-l);
  letter-spacing: 0.06em;
}
.track__scene {
  margin-top: 16px;
  font-family: var(--font-head);
  font-size: var(--fs-m);
  font-weight: 500;
  line-height: 1.7;
  font-feature-settings: "palt";
  word-break: auto-phrase;
  text-wrap: pretty;
}
.track__link {
  display: inline-block;
  margin-top: 24px;
  padding: 8px 0;
  color: var(--amber);
  text-decoration: none;
  border-bottom: 1px solid var(--amber);
  transition: color 0.4s var(--ease), border-color 0.4s var(--ease);
}
.track__link:hover { color: var(--paper); border-bottom-color: var(--paper); }

/* 配信予定の曲：ジャケットを少し暗くする */
.track.is-upcoming .track__jacket img { filter: brightness(0.5) saturate(0.7); }
.track.is-upcoming .track__date { color: var(--paper-dim); }

/* 最後：続きは制作中（1列・線のすぐ横に左寄せ） */
.track.is-next {
  grid-template-columns: 1fr;
  padding-block: 64px;
  padding-left: calc(50% + 48px);
}
.track.is-next .track__body { order: 0; justify-self: start; }
.track.is-next .track__scene { color: var(--paper-dim); }

@media (max-width: 767px) {
  .timeline { gap: 80px; }
  .timeline::before { left: 0; }
  .track {
    grid-template-columns: 1fr;
    row-gap: 24px;
    padding-left: 24px;
  }
  .track::before { left: 0; top: 0; }
  .track .track__jacket,
  .track:nth-child(even) .track__jacket { order: 0; justify-self: start; }
  .track .track__body,
  .track:nth-child(even) .track__body { order: 0; justify-self: start; }
  .track.track--latest { grid-template-columns: 1fr; }
  .track--latest::before { display: block; }
  .track.track--latest .track__jacket { width: 100%; max-width: none; }
  .track--released .track__jacket { max-width: 72%; }
  .track--small .track__jacket { max-width: 56%; }
  .track.is-next { padding-top: 0; padding-bottom: 64px; padding-left: 24px; }
  .track.is-next::before { top: 0.6em; }
}

/* ---------- ここから：ストーリー（写真に文字を重ねる） ---------- */
.story {
  position: relative;
  overflow: hidden;
  min-height: 720px;
  display: flex;
  align-items: center;
}
.story__photo {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: 70% center;
}
.story::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(22, 21, 26, 0.6) 0%, rgba(22, 21, 26, 0.2) 50%, rgba(22, 21, 26, 0) 70%);
}
.story__inner {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: var(--max);
  margin: 0 auto;
  padding: var(--space-section) var(--side);
  display: grid;
  gap: 64px;
}
.story__step {
  max-width: 24em;
  font-family: var(--font-head);
  font-size: var(--fs-m);
  font-weight: 500;
  line-height: 1.8;
  font-feature-settings: "palt";
  word-break: auto-phrase;
  text-wrap: pretty;
}

@media (max-width: 767px) {
  .story { min-height: 0; align-items: flex-end; }
  .story__photo { object-position: 75% center; }
  .story::after { background: rgba(22, 21, 26, 0.72); }
}

/* ---------- ここから：ヤモさん（明るい面） ---------- */
.yamo {
  background: var(--paper);
  color: var(--ink);
  padding: var(--space-section) var(--side);
}
.yamo__inner {
  max-width: var(--max);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  align-items: center;
  gap: 64px;
}
.yamo__text { display: grid; gap: 32px; max-width: 40em; }
.yamo__figure img { width: 100%; max-width: 480px; margin-left: auto; }

.section-title { font-size: var(--fs-m); }

@media (max-width: 767px) {
  .yamo__inner { grid-template-columns: 1fr; gap: 48px; }
  .yamo__figure { order: -1; }
  .yamo__figure img { max-width: 240px; margin: 0; }
}

/* ---------- ここから：聴く・つながる ---------- */
.listen { padding: var(--space-section) var(--side) 64px; }
.listen__inner {
  max-width: var(--max);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 64px;
}
.listen__head { display: grid; gap: 24px; align-content: start; max-width: 24em; }
.listen__lists { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; }
.listen__label {
  font-family: var(--font-body);
  font-size: var(--fs-s);
  font-weight: 500;
  color: var(--amber);
  letter-spacing: 0.08em;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--line);
}
.link-list li { border-bottom: 1px solid var(--line); }
.link-list a {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  min-height: 56px;
  padding: 8px 0;
  text-decoration: none;
  transition: color 0.4s var(--ease);
}
.link-list a:hover { color: var(--amber); }
.link-list__id { color: var(--paper-dim); }

@media (max-width: 899px) {
  .listen__inner { grid-template-columns: 1fr; gap: 48px; }
}
@media (max-width: 599px) {
  .listen__lists { grid-template-columns: 1fr; }
}

/* ---------- ここから：最後のボタン ---------- */
.closing {
  padding: 0 var(--side) var(--space-section);
}
.closing__inner {
  max-width: var(--max);
  margin: 0 auto;
  padding-top: 64px;
  border-top: 1px solid var(--line);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 24px 32px;
}
.closing__note { color: var(--paper-dim); }

/* ---------- ここから：一番下 ---------- */
.site-footer {
  padding: 48px var(--side);
  border-top: 1px solid var(--line);
  color: var(--paper-dim);
}
.site-footer__inner {
  max-width: var(--max);
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 8px 32px;
}
.site-footer small { font-size: var(--fs-s); }

/* ---------- ここから：404ページ ---------- */
.notfound {
  min-height: 100vh;
  min-height: 100svh;
  display: flex;
  align-items: center;
  padding: 128px var(--side);
}
.notfound__inner { max-width: var(--max); width: 100%; margin: 0 auto; display: grid; gap: 32px; justify-items: start; }
.notfound h1 { font-size: var(--fs-l); }

/* ---------- ここから：動き1（ふわっと出る） ---------- */
.js .reveal {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 0.8s var(--ease), transform 0.8s var(--ease);
}
.js .reveal.is-visible { opacity: 1; transform: none; }

/* 動きを減らす設定の人には、動かさない */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
  .js .reveal { opacity: 1; transform: none; }
  .button:hover { transform: none; }
}